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A kinematic analysis of the "break-out" phase of the freestyle, backstroke, and butterfly swimming strokes

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Item Summary Allnutt, Stephen Benjamin 2015-10-02T20:54:04Z 2015-10-02T20:54:04Z 2014-08
dc.description M.S. University of Hawaii at Manoa 2014.
dc.description Includes bibliographical references.
dc.description.abstract This study examined the effect of different time intervals between when a swimmer begins their initial stroke until their head breaks the surface on three variables: horizontal hip velocity when their pull begins, velocity when their head breaks the surface, and peak velocity during the first stroke. Twelve university (Division 1) swimmers performed their breakout-stroke and were analyzed using motion analysis software. Paired-samples t-tests were used to compare self-selected breakout time, elongated breakout time, and shortened breakout time. The mean breakout time was 0.40 ± 0.22 (n=5) for Freestyle, 0.82±0.11 (n=5) for Backstroke, and 0.25±0.17 (n=3) for Butterfly during normal breakout trials. When all strokes were combined, significant differences were found in head break velocity during self-selected trials (1.60±0.20 m/s) when compared to elongated (1.43±0.22 m/s, p≤0.01), and shortened (1.39±0.19 m/s, p≤0.01). Regression analysis showed a significant positive correlation between head break velocity and maximal velocity during the first pull.
dc.language.iso eng
dc.publisher [Honolulu] : [University of Hawaii at Manoa], [August 2014]
dc.relation Theses for the degree of Master of Science (University of Hawaii at Manoa). Kinesiology and Rehabilitation Science.
dc.rights All UHM dissertations and theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission from the copyright owner.
dc.subject kinesiology
dc.subject swimming
dc.title A kinematic analysis of the "break-out" phase of the freestyle, backstroke, and butterfly swimming strokes
dc.type Thesis
dc.type.dcmi Text
Appears in Collections: M.S. - Kinesiology and Rehabilitation Science

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